1) quasi-least squares
拟最小二乘
2) least square fitting
最小二乘拟合
1.
Comparison of linewidth measurement using different probe based on the least square fitting model;
基于最小二乘拟合的不同探针测量线宽的比较
2.
Study on the least square fitting of coordinate parameter model;
坐标参数模型的最小二乘拟合研究
3.
Through acquiring the DR(digital radiography) images of the double-circled object at two imaging positions,the image and graphics processing methods and the least square fitting method are used so as to get the coordinates of the .
利用双圆目标体二次成像获得的DR(Digital Radiography)图像,配合图像、图形处理方法和最小二乘拟合技术求取不同成像位置下的目标体圆心投影坐标,然后求解方程组得到投影坐标系的原点坐标。
3) least-square fitting
最小二乘拟合
1.
The surface error was obtained by subtracting the theory wavefront error from the phase datum and eliminating the translation error through least-square fitting.
对非球面度较小的非球面,直接利用标准球面镜作为参考表面,通过数字干涉仪可以测得全孔径位相分布,将所得的数据剔除参考球面波相对理论非球面的偏差,并运用最小二乘拟合求得机构定位误差,消去此误差,即可获得真实的面形信息。
2.
In order to obtain reliable strain field,full-field strain measurement based on least-square fitting of local displacement for digital image correlation method is proposed.
为了从含噪声的位移场中计算得到可靠的应变场,提出一种基于位移场局部最小二乘拟合的全场应变求解方法。
3.
In this paper a new algorithm based onFourier modal estimate is proposed to reconstruct the original wavefront by use ofleast-square fitting.
我们提出基于傅里叶模式估计的二维波前重建算法,利用最小二乘拟合原理,可以计算出待测波前的傅里叶变换系数,从而恢复原始波前。
6) least square fitting method
最小二乘拟合法
1.
Finally,the location of laser spot center is acquired accurately by using the least square fitting method.
首先通过分析成像特点提取激光光斑;然后在几何特征约束下对残差边缘进行二次修剪,优化边缘;最后利用最小二乘拟合法得到激光光斑形心的精确定位,并将其应用于火炮的重要静态参数——弯曲度测量。
补充资料：最小二乘拟合
分子式：
CAS号：
性质：基于使偏差平方和达到极小的原理对曲线和方程进行拟合。
CAS号：
性质：基于使偏差平方和达到极小的原理对曲线和方程进行拟合。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条